Wheeled scraper or self-loading cart.



PATENTED MAY 12, 1903.

0. H. SAWYER. WHEELED SGRAPER 0R SELF LOADING CART.

APPLICATION FILED JULY 16, 1900.

2 SHEETS-$111131 1.

no MODEL.

i-l l I lllllfll PATENTED MAY 12. 1903.

0. H. SAWYER. WHEELED SGRAPER 0R SELF LOADING CART.

APPLIOATIdN FILED JULY 16, 1900.

2 SHEETS-SHEET 2.

N0 MODEL.

NITED TATES Patented May 12, 1903.

PATENT GFFIC CHARLES H. SAWYER, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE- HALF TO HORATIO A. SMITH, OF MINNEAPOLIS, MINNESOTA. V

WHEELED SCRAPER OR SELF-LOADING CART.

SPECIFICATION formingpart of Letters Patent No. 728,136, dated May 12, 1903.

Application filed m 16, 1900.

To all whom it may concern.-

Be it known that I, CHARLES H. SAWYER,

a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain newand useful Improvements in Wheeled Scrapers or Self-Loading Carts, of which the followingis a specification.

My invention relates to improvements in the construction of wheeled scrapers or selfloading carts and constitutes simple and convenient means for manipulating said Ina-- chines; and it consists generally in the combination and arrangement hereinafter described, and particularly pointed out in the claims.

In the drawings which form a part of this specification, Figure l is a perspective of a wheeled scraper in loaded position and embodying my invention; Fig. 2, a plan view in perspective of same; Fig. 3, aperspective view of the bail-catch; Fig. 1, a view in section of! same on line A B; Fig. 5, a view in section of same on line 0 D; Fig. 6, a view in section of bail-slot; Fig. 7, a view in section of slot-plate; Fig.8, a perspective view of scraper in loading position Fig. 9,a sectional view of suspensionlinks and stay-chain; Fig. 10, a view in perspective of the bail-catch in looking position Fig. 11, a perspective view of scraper in reversed position; Fig. 12, asectionalview of' bail-catch on lineE F;' Fig. 13, a view in section of hub, sand-band, and portion of axle and pan; and Fig. 14:, a sectional view on line G H.

Similar numbers refer to similar parts throughout the several views.

In the drawings, 1 represents a crank-axle, upon the ends of which are mounted the wheels 2. A lever 3 is located at the rear of the pan. The front of this lever is forked and secured to either side of the machine at the offset of the axle, and by raising or lowering the lever the axle is partially revolved. A pan or scraper 4. constructed in the ordinary way is suspended below the axle 1 by the links 5, securely fastened to the sides of the pan and pivotally attached to the lever 3 in front of the point Where said lever is se- 50 cured to the axle. The lever is secured to the disks or sand-bands 6, rigidly attached vided with a catch 12, which engages the wrist Serial No. 23,763. (No model.)

The disks 6 are provided with an annular 6o flange 9, located in the said disks and arranged to fit the annular groove 10in the end of the hub 1'1, providi-ng a means for keeping the inner portiouofsaid hub clear of dirt and sand. The lever 3 is preferably pro- 13 upon the back of the pan when said pan is in the loaded and reversed positions and holds ,be lowered for filling. A bail 15 is pivoted to theforward portion of the pan and extends upward and over the tongue 16 in front of the said pan and isarranged to slide upon said tongue as thepan is dumped. The bail 15 is provided with a head 17 at its pivot ends and arranged to slide in the slot 18, 'secured'on either side of the front portion of the pan. This slot 18--is formed bya yoke 19, preferably constructed of suitable rod material, formed into shapeto receive the bailhead 17 and provided at its bent or curved portion with loop 20 for the reception of bolt or rivet to secure it to the pan. The front portion of the yoke 19 is secured to the pan by the plate 21, which-is provided with holes 22 lengthwise of the plate and the yoke and arranged to receive and secure the ends of the said yoke. The plate 21 is provided with a shoulder 23 and slotted bolt or rivet holes '24 and is adapted to be adjusted alongthe located on the side of the pan that when the said pan is in reversed position the slot 18 is at right angles to the bail.

A strap or guide is secured to the tongue 16 and extends over the bail 15, forming a way in which the said bail travels and pre- Vents it from being thrown upward and out of place. A catch is preferably pivoted to the strap or guide 25 and falls behind the bail when the said bail is in the forward portion of the way and retains it in this position. The catch is preferably constructed in two parts-the stop 26 and the trip 27joined together by a hinge-joint. The stop and trip are partially bifurcated and arranged to straddle the strap or guide 25. The trip 27 is preferably pivoted to the strap orguide by the bolt or rivet 28 and is provided with ears 29, arranged to hinge between ears 30 on the stop 26. The trip 27 is provided with curved ends 31, which are adapted to drop down in the track of the bail when the catch is operated to release the said bail. The cars 30 of the stop 26 are constructed with square or flat edges and arranged to engage the tension-spring 32, secured to the trip 27 by means of the lug 33 and the bolt or rivet base 34..

A lever 35 is preferably attached to the back portion of the guide 25 and connected with the stop 26 by a rod 36. The lever 35 is suitably provided with a handle 37. When it is desired to dump the pan, the lever 35 is pushed forward, which operation by means of the connecting-rod 36 throws the stop 26 forward, the solid portion 38 of the said stop fuloruming or pivoting on the guide. The heel 39 on the stop 26 raises clear of the way, and the trip 27 being pivoted on the guide the said stop and said trip open up and away from each other jack-knife fashion. The spring 32 engages the under edge of the cars 30 on the stop 26 and retains the whole catch in the open position, the curved ends 31 of the trip hanging down in the way and the bail free to move backward. The bail still remains in its forward position until the back portion of the pan is raised. This causes the axle to revolve slightly, carrying the weight of the pan past the center of the pivot, which is the centerof the wheels, and the bail-head 17 moves to the front portion of the slot 18. The draft is now exerted above the pivot-point, and without an effort on the part of the operator or requiring a ground contact with the nose of the pan the said pan dips forward and rolls over, assuming the reversed position and carrying the bail back in the slot or way formed by the guide 25. As the bail travels back on the tongue it strikes the curved ends 31 of the trip 2'7, throwing it up to its original position and causing the stop 26 to lower to its position below the guide. The spring 32 engages the end edges of the ears30, rigidly holding the catch in place, and as the bail is brought back to the forward end of the slot or way it strikes the heel 39, raising the whole catch, the said catch fulcruming or pivoting on the pivotpoiut 28, and the greatest portion of said catch being forward of the fulcrum or pivotpoint 28 causes it to drop back into position behind the bail and again lock it. Back pressure against the stop 26 is exerted below the fulcrum 28, and the solid portion 38 of said stop prevents a downward movement of the catch. To cause the nose or front of the pan to readily take the load, I transfer the draft from the axle to the said pan. To accomplish this, I provide the slot or loop 40 at the back end of the tongue. This slot or loop I prefer to construct of rod material bent into the desired shape and which I show in the drawings as twin parallel loops or slots secured to the tongue by the bolt 41. These loops 40 are turned upward to allow for the Variation in the height of the axle when said axle is partially revolved by the lever. To take the load, the pan is lowered by the lever 3, the axle advances in the slots or loops 40, transmitting the draft to the catch and the bail and effectually forcing the nose of the pan to its work. The greatest portion of the pan beingin the rearof the connecting or suspension links 5 to prevent said pan from tipping and dropping backward and also to regulate the forward dip of the pan when taking the load, I provide the stay-chain 4.2, one end of which is secured to the front portion of the pan by the strap 13 and the bolt 44. and the other end secured to the bail by the collar 45. To prevent the lever 3 from swinging too far forward when raised to lower the pan, I provide the snub ends or shoulders 46 on the front end of said lever. These snub ends 16 engage the front edges of the connecting or suspension links 5. When the pan is filled, the lever 3 is drawn downward, which partially revolves the axle and raises the pan to its former position. The catch 12 automatically engages the wrist 13 on the pan, and the machine is ready to be conveyed. When it is desired to unload the pan, the lever 35 is pushed forward, disengaging the stop 26 from the bail and leaving the said bail free to slide backward on the tongue. The lever 3 is now raised without being detached from the back of the pan, the bail is drawn backward, and the pan reversed. Thelever 35 is provided with a suitable catch 47, which engages the wrist on the back of the pan and holds it in the reversed position until released from said catch. The pan is provided with suitable handles 48, secured to either side of the back portion of said pan, to guide and adjust the pan when taking the load.

To prevent a forward and backward sliding of the axle in the slots or loops 10 while the pan is in the reversed position, I provide the collar or band 49, secured to the central portion of the axle. This collar or band is provided with a lug or stud 50, arranged to move between the twin slots or loops 10 when the machine is in the loading and loaded po sitions. I provide a cross strap or plate 51 on the top of the back portion of the loops or slots 10, which engages the said lug or stud 50, securely holding the axle in the back portion of the said slots or loops when the pan is in the reversed position.

I am aware that wheeled scrapers or selfloading carts have been made with a cranked axle in combination with a tongue, a bail and a pan, a guide secured to said tongue and forming a way for said bail, a catch secured to said guide and adapted to lock said bail in the way, and a sand-band attached to the axle and forming abutments for the wheels. I do not claim such a combination broadly;

but

What I do claim as my invention, and desire to secure by Letters Patent, is

1. The combination in a wheeled scraper with the cranked axle and sand-band, of the semisleeve 7attached to and an integral part of said sand-band and having grooved straps or ears 8 provided with bolt or rivet holes, substantially as shown and for the purpose specified.

2. The combination in a wheeled scraper with the lever and sand-band, of the semisleeve 7 attached to and an integral part of said sand-band and having grooved straps or ears 8 arranged to receive said lever and provided with bolt or rivet holes in said straps substantially as shown and for the purpose specified.

3. In a wheeled scraper, the combination, with the lever and sand-band,;of a semisleeve integral with said band and having grooved straps or ears to receive said lever, substantially as described and for the purpose specified.

4. The combination in a wheeled scraper with the cranked axle and tongue, of the twin loops or slots 40 secured to back end of said tongue and arranged to secure said tongue to the central portion of the said axle, the collar or band 49 secured to the axle and provided with the lug or stud 50 arranged to move between the said loops, the strap or plate 51 secured to the said loops and adapted to engage the said lug or stud, substantially as shown and for the purpose specified.

5. The combination in a wheeled scraper with the tongue, the bail and the guide, of the bifurcated bail-catch pivoted to and arranged to straddle said guide and adapted to lock said bail in the way formed by said guide, substantially as shown and for the purpose specified.

6. The bail-catch consisting of the bifurcated stop 26 provided with hinge-ears 3O havingfiat edges and the'bifurcated trip 27 provided with hinge-ears 29 arranged 'to work between said ears 30 on the stop, and the tension-spring 32 secured to said trip 27 by the lug 33 and the bolt-base 34: and adapted to engage the fiat edges of said ears 30, substantially as shown.

7. The catch consisting-of the bifurcatedstop 26 having asolid upper portion 38 adapted to'pivot or fulcrum on the guide when operated to release the bail and providedwith ears adapted to receive the operating-rod36,

and a bifurcated trip pivotally secured to the guide and having the curved ends 31 and adapted to close automatically against the said stop when the said curved ends 31'are moved upward, substantially as shown and for the purpose specified.

8. The combination in a wheeled scraper with the lever, the pan and the suspensionlinks 5, of the snub ends or, shoulders 46 located on the front end of the said lever forgage said links when the said lever is raised to lower the said pan, substantially as shown- 7 and for the purpose specified.

9. The combination in a wheeled scraper with the pan and hail, of the stay-chain 42,-

one end of which is secured to the front porsaid yoke, and said plate being provided with means whereby it is rendered adjustable on said yoke, substantially as described.

11. The combination in a Wheeled scraper with the pan, of the yoke 19 secured to the tion of said pan and the other end secured to the said bail, substantially as shownand front portion of. the said pan on either side, 7

by a bolt or rivet at its bent rear portion and the plate 21 provided with holes lengthwise of said plate and adapted 'to receive the ends of the yoke 19 and secure it to the said pan, the said plate 21 having slotted bolt-holes 24 and the shoulder 23 and adapted to be adjusted along the said yoke 19, substantially as shown and for the purpose specified.

12. In a wheeled scraper, the combination, with a bail-catch, comprising a bifurcated stop 26 provided with ears 30, of abifurcated trip 27 provided with ears 'to work between said ears 30, and a spring 32 secured to said spring 27 and adapted to engage said ears 30,

substantially as described.

CHARLES H. SAWYER.

Witnesses:-

E. W.GILLMAN, HENRY B. SMITH.

IIO 

